"Every perception is to some degree an act of creation, and every act of memory is to some degree an act of imagination."
-- Gerald Edelman, Second Nature: Brain Science and Human Knowledge
6 Introducing the mnemonic mediumThe early impact of the prototype mnemonic mediumIntroducing the mnemonic mediumHow can we develop transformative tools for thought？2020-10-18Journal
This takes advantage of a fundamental fact about human memory: as we are repeatedly tested on a question, our memory of the answer gets stronger, and we are likely to retain it for longer The literature on this effect is vast. A useful entrée is: Gwern Branwen, Spaced Repetition for Efficient Learning.. This exponential rise perhaps seems innocuous, but it's transformative. It means that a relatively small number of reviews will enable a user to remember for years. With the time taken to review a typical question being just a few seconds, that means a user can achieve long-term recall with no more than a few minutes' work. By contrast, with conventional flashcards it takes hours of review to achieve the same durability. Exponential scheduling is far more efficient.